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Lookahead-R: Budget-Aware Tool Retrieval via Execution-Centric Planning

This story is from 2026-09-30. It is preserved in the archive; the latest stories are on the live feed.

arXiv:2609.35811v1 Announce Type: new Abstract: Tool retrieval is a critical bottleneck for LLM-based agents operating over large, heterogeneous API ecosystems. Existing approaches face an inherent trade-off: semantic retrievers are fast but suffer from the semantic-functional gap, while execution-…

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  1. 2026-09-30 04:00 · arXiv cs.CL
    Lookahead-R: Budget-Aware Tool Retrieval via Execution-Centric Planning

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